LIQUID-COOLED FIELD WINDING Russian patent published in 1994 - IPC

FIELD: electrical engineering. SUBSTANCE: liquid-cooled field winding has bars made up of posts of simple conductors with their own insulation and insulated from rotor by frame insulation. Placed between posts along entire length of bar are indirect coolers which have basic member and direct and return flow tubular members with hydraulic channels communicating with return and pressure chambers connected through unions with water supply system. Design of indirect coolers makes it possible to reduces losses and excitation power, and cut down capital costs and operating expenses, as compared with machines using direct coolers. EFFECT: reduced losses, cut down expenses. 6 cl, 6 dwg